Coal underground gasification simulation experiment system

A simulation experiment, underground gasification technology, applied in coal gasification, underground mining, borehole/well components, etc.

Active Publication Date: 2021-07-09
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the angle between two horizontal wells in the horizontal direction in CRIP has the highest efficiency of underground coal gasification, which has not yet been clarified.

Method used

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  • Coal underground gasification simulation experiment system
  • Coal underground gasification simulation experiment system
  • Coal underground gasification simulation experiment system

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0036] The detailed features and advantages of the present invention are described in detail below in the embodiments, the content of which is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, claims a...

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Abstract

The invention provides a coal underground gasification simulation experiment system. The coal underground gasification simulation experiment system comprises a gas injection device, a coal gasification device and a gas collection and treatment device which are sequentially connected through pipelines; the coal gasification device is used for combusting and gasifying a coal sample in the coal gasification device under the simulated formation condition by using oxygen and water vapor injected by the gas injection device so as to generate synthesis gas; the gas collection and treatment device is used for purifying and separating the synthesis gas; and the side wall of a gasification container of the coal gasification device is provided with a plurality of injection-production holes located in the same horizontal plane, and the injection-production holes are used for insertion of injection-production pipes so as to supply or output the gas to the coal sample. During an experiment, the two injection-production holes can be selected according to the included angle between two horizontal wells in the horizontal direction, the injection-production pipes are inserted into the two injection-production holes respectively for the gasification simulation experiment, the condition that the coal underground gasification efficiency is highest when the included angle between the two horizontal wells in the horizontal direction is the required angle can be determined through multiple experiments, and then the included angle between the two horizontal wells is optimized.

Description

technical field [0001] The invention relates to the field of coal resource mining, in particular to an underground coal gasification simulation experiment system. Background technique [0002] Underground coal gasification (Underground Coal Gasification, referred to as UCG) is a process in which coal in the formation is directly burned in a controlled manner, and combustible gas is produced through the thermal and chemical effects of the coal. The product mainly contains combustible gas. Synthetic gas (synthetic gas) with components CH4, H2, CO. This technology integrates the three major processes of well construction, coal mining, and coal gasification. It converts traditional physical coal mining into chemical coal mining, and has good safety. The advantages of low investment, high efficiency, and less pollution have been valued by countries all over the world. It is known as the second-generation coal mining method, and is especially suitable for recovering abandoned coal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/295E21B43/30E21B49/00
CPCE21B43/295E21B43/305E21B49/00
Inventor 薛华庆彭涌赵永明张福东东振孙粉锦蒋雅丽
Owner PETROCHINA CO LTD
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